Draft check



m., 3 w. sERRlcK 2223,810

DRAFT CHECK Filed Jan. 12, 1940 2 sheets-sheet 1 A forneys A Dec.,3, 19ml1 w. sERRlcK DRAFT CHECK Filed Jan. 12, 1940 2 Sheets-Sheet 2 Patented Dec. 3, 1940 UNITED STATES naar-r canon William Serrick; Fairbanks, Alaska, assignor to m! W; Holmes, Fairbanks; Territory of Alaska Application` January 12, r19450, Serial.. No. 313,611,

Claims".

This invention relates, to a draft. check for doors to prevent air from passing under a door when in a closed position, and. has ifor the.` primary object the provisionf of an efficient andinex- Y pensive device of this character which may be readily installed on a door and-.which will automatically move to tightly engage with the door sill or the oor when the door moves into. fully closed position to exclude.. air from under the door and which will automatically ymove upwardly away from the iioor as the door begins. to move toward an open position to prevent the` device from dragging on the floor and interfering with the opening of the door and scratching or otherwise damaging thel floor.

With these and other objects in view, the invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1A is a fragmentary side elevation show- 25 ing a portion of a door and door frame with the check applied to the door.

Figure 2 is a sectional view taken on the line 2--2 of Figure 1.

Figure 3 is a view showing the device associated with a door frame with the door omitted.

Figure 4 is a sectional view taken on the line 4-4 of Figure 3, showing the device on the door and in engagement with the licor to exclude air from under the door.

Figure 5 is a view similar to Figure 4 showing the device on the door when the latter is in an open position so that said device is free of the floor.

Figure 6 is a fragmentary perspective view illustrating a portion of the draft check. y

Figure 7 is a fragmentary sectional view showing the operating cam of the device engagingwith a grooved portion formed in the door frame for bringing about actuation of the device into engagement with the floor when the door is closed.

Referring in detail to the drawings, the numeral 5 indicates a fragmentary portion of a door frame and E a fragmentary portion of a door. "In adapting the present invention for use on the 50 door and in connection with the door frame the latter has cut or formed therein a cut-away portion or pocket 1 to form or provide a camming wall for a cam element 8 acting as an operating medium for the present invention.

The check is indicated in entirety by the character 91 and consists primarily of outer and inner elongated plates III.y and I'I arranged to have telescopic.` relation with each other and a-re arcuately curved transversely. The outer plate I0 at one edge has integral therewith an attaching 5 flange I2 provided with a series of slots I3 to receive fasteners such as` screws or the like, as shown at I4, for adjustably securing the check on the door G.

It isv to be understood that the check 9 when 10 adapted; to the door extends for the full width thereof and the inner plate of said check is provided. with slots I5 through which reduced end portionsY I6 of supporting brackets I'I extend. The reduced portions IB extendthroughthe-outer 15 plate I0 and are headed or riveted, as shown at I8. The brackets II form journals for an operating rod I9 on which is formed arms or extensions A2I| to engage with lips 2| struck from the inner plate. The inner plate II is fitted between 2O the brackets II and the outer plate I0 and retained in this position by the reduced end portions I 6 and their headed ends I8. This construction Will permit the inner plate to have sliding relation with the outer plate so that when the 25 operating rod I9 is rotated in one direction the inner plate will be moved downwardly to contact the iioor and its door-contacting edge is equipped with a cushion strip 22 which when in engagement with the floor will effect an efcient seal 30 therewith and will prevent marring or damaging of the fioor by the device.

Leaf springs 23 are carried by the brackets l1 and the ends thereof are attached to lips 24 formed on the inner plate and act to normally 35 support the inner plate in an elevated position away from the iioor so that the door in opening and closing will not be interfered with by the present invention dragging upon or scraping the floor.

The operating shaft I9 has the cam element 8 secured to one end wihch operates in aligned notches 25 provided in the inner and outer plates at one end thereof. When the door is open and the inner plate supported in an elevated position 45 by the springs the cam-shaped operating element protrudes through the notches 25 so that on the door reaching a closed position it will have engaged with a Wall of the pocket 1 and imparted rotation to the shaft I9 to move the 50 inner plate- II downwardly so that the strip 22 thereof tightly engages with the iloor and thereby effectively prevents the passing of air under the door. As soon as the door starts away from a closed position the springs immediately act to move or slide the inner plate upwardly, consequently permitting the door to swing freely without the device dragging on the floor and interfering with the opening or closing of the door.

A device of the character shown and described can be readily installed on any door by anyone unskilled in the art and will in no way interfere with the normal opening and closingxoflthe door but will provide' an effective draft check toipzrevent air from passing under the door when the latter is in a fully closed position. g

It is believed that the foregoing description, f" when taken in connection with the drawingswil-l fully set forth the construction and advantages which such a device relates, so that further detailed description will not,b,e ,regluirectA Having thus described my invention', 'what claim is:

1. In a draft check fordoors, inner and plates having telescopic relation and transversely curved, means for' adjustablyy connecting'the outer `plate to a, door, bracket'sfhavingfreduced ends riveted on the' outer plate j and, said inner plate having slots to receive the reducedgfendsof the bracketslfor slidably connectingthefinner plate to the outer plate, a-s`ealing"strip carried by the inner plate, means urging the "inner 'plate away from the floor, and means carried Vby the brackets andconnected to-the inner 'plate for automaticallyvmoving said inner 'fplat'ei inftoienv-l gagement with the ffl'oor' to `effect la iseal'tlfe're-i with-on the door assumingaclsed position.

2. In a draft check for doors, inner and outer plates having telescopic relation andtransver's'ely curved, means for adjustably connecting the outer plate to a door, brackets having reduced ends riveted on the outer plate and said inner plate having slots to receive the reduced ends of the brackets for slidably connecting the inner 5 plate to the outer plate, a sealing strip carried by the inner plate, leaf springs secured to said brackets and the inner platelior urging the latter ayvayifromthef floor, ann'operating rod journaled in said bracket, means connecting said operating l rod to the inner plate, and means carried by said operating rod to engage with the door frame on the door moving into closed position to effect A 4. movement of. the inner plate in the direction of of this invention to those'jskilled--inytheafttoll5" andjinto contactwi'th the floor. 1 3. In a draft check for doors, inner and outer ,plates havingv telescopic relation and transversely curved," means "foradjustably connecting the outerplate to a door, brackets having reduced outer ends'riveted on the -outer plate and said inner plate having slots to receive the reduced ends oi the brackets fo'rpslidably lconnecting the inner plateto 'the "o'uterfplate, asealing strip carried byt'heinnerv plate,'le`af springs secured to said brackets and the inner plate for urging the latter vaway from the floor, an operatingrod journaled 4in said brackets, an extension on said rod, a lip on said inner vplate 't'oie'ngage said extension, and a rcam-shapesil element secured on the operating rodv to' contacta door frame von the door moving 3 into 'closed position tojrotate the rod and thereby ove'the inner plate toward and into Contact with the floor.

WILLIAM SERRICK. 3 

